html, body
    line-height: 1
    font-weight: 200
    font-family: "PingFang SC", "STHeitiSC-Light", "Helvetica-Light", Arial, sans-serif
.clearfix
    display: inline-block
    zoom: 1
    &:after {
        content: "";
        height: 0;
        line-height: 0;
        clear: both;
        display: block;
        visibility: hidden;
    }
@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5)
    .border-1px
        &::after
            -webkit-transform: scaleY(0.7)
            transform: scaleY(0.7)

@media (-webkit-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2)
    .border-1px
        &::after
            -webkit-transform: scaleY(0.5)
            transform: scaleY(0.5)